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参数资料
| 型号： | TSC2301PAGR |
| 厂商： | Texas Instruments, Inc. |
| 元件分类： | Codec |
| 英文描述： | PROGRAMMABLE TOUCH SCREEN CONTROLLER WITH STEREO AUDIO CODEC |
| 中文描述： | 可编程触摸屏控制器，立体声编解码器 |
| 文件页数： | 78/92页 |
| 文件大小： | 1161K |
| 代理商： | TSC2301PAGR |
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www.ti.com
TSC2301
SLAS371D–SEPTEMBER 2002–REVISED AUGUST 2004
The DAC volume control register is formatted as follows:
Bit 15
MSB
DAMU
L
Bit 14
Bit 13
Bit 12
Bit 11
Bit 10
Bit 9
Bit 8
Bit 7
Bit 6
Bit 5
Bit 4
Bit 3
Bit 2
Bit 1
Bit 0
LSB
DAVL
6
DAVL5
DAVL4
DAVL3
DAVL
2
DAVL
1
DAVL
0
DAMU
R
DAVR6 DAVR5 DAVR4 DAVR3 DAVR2 DAVR DAVR
1
0
Bit 15 — DAMUL
Left DAC Mute. This bit is used to mute the input to the left channel DAC. The user can set this bit to mute the
DAC while retaining the previous gain setting in DAVL[6:0], so that the gain control returns to the previous gain
setting when DAMUL is cleared. When the DAMUL bit is set, the left DAC digital gain control soft-steps down to
its lowest level, then all zeroes are sent to the interpolation filter of this DAC. This procedure is used to reduce
any audible artifacts (
pops or clicks
) of the mute procedure. This soft-stepping process is reversed when the
DAMUL bit is cleared (unmute).
Table 40. Left DAC Mute
DAMUL
0
1
Description
Left channel DAC is active.
Left channel DAC is mute. (default)
Bits [14:8] — DAVL6- DAVL0
Left DAC Volume Control. These 7 bits control the gain setting of the left channel DAC volume control PGA. This
volume control can be programmed from -63.5 dB to 0dB in 0.5-dB steps. Full volume (0dB) corresponds to a
setting of 7Fh. Full attenuation (-63.5 dB) corresponds to 00h. The default volume setting is 0 dB.
DAVL[6:0] = 1111111 (127d) = 0 dB (default)
DAVL[6:0] = 0000000 (000d) = -63.5 dB (Min)
1LSB = 0.5 dB
Bit 7 — DAMUR
Right DAC Mute. This bit is used to mute the input to the right channel DAC. The user can set this bit to mute the
DAC while retaining the previous gain setting in DAVR[6:0], so that the gain control returns to the previous gain
setting when DAMUR is cleared. When the DAMUR bit is set, the left DAC digital gain control soft-steps down to
its lowest level, then all zeroes are sent to the interpolation filter of this DAC. This procedure is used to reduce
any audible artifacts (
pops or clicks
) of the mute procedure. This soft-stepping process is reversed when the
DAMUR bit is cleared (unmute).
Table 41. Right DAC Mute
DAMUR
0
1
Description
Right channel DAC is active.
Right channel DAC is mute. (default)
Bits [6:0] — DAVR6- DAVR0
Right DAC Volume Control. These 7 bits control the gain setting of the right channel DAC volume control. This
volume control can be programmed from -63.5 dB to 0 dB in 0.5-dB steps. Full volume (0 dB) corresponds to a
setting of 7Fh. Full attenuation (-63.5 dB) corresponds to 00h. The default volume setting is 0 dB.
DAVR[6:0] = 1111111 (127d) = 0 dB (default)
DAVR[6:0] = 0000000 (000d) = -63.5 dB (Min)
1LSB = 0.5 dB
78
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